Dear Dr. Gott: Four months ago, I injured my arthritic knee while getting into a car. I thought I had twisted it or strained a ligament because it hurt so much at the time. I was told I needed to go ...

Dear Dr. Donohue - About four months ago, a bulge appeared behind my right knee. I saw a doctor. He poked around and finally said it was a cyst. He told me to put a hot, wet towel on it. I did this ...